/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package CONTROLLER_ADMIN;

import java.io.IOException;
import java.io.PrintWriter;
import java.util.ArrayList;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 *
 * @author samph
 */
@WebServlet(name = "ThongKeController", urlPatterns = {"/ThongKeController"})
public class ThongKeController extends HttpServlet {

    /** 
     * Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        PrintWriter out = response.getWriter();
        try {
             String path =this.getServletContext().getRealPath("/") + "questionBank.xml";
                    ArrayList nganHangCauHoi = new ArrayList();
                    nganHangCauHoi = NganHangCauHoi.docDanhSachCauHoi(path);
                    int sltrungbinh = 0;
                    int slkho = 0;
                    int slde = 0;
                    int sltong =0;
                    for(int i = 0 ; i< nganHangCauHoi.size() ; i++)
                    {
                        CauHoi ch  = (CauHoi)nganHangCauHoi.get(i);
                        if(ch.getLevel()==1)
                            slde ++;
                        if(ch.getLevel()==2)
                            sltrungbinh ++;
                        if(ch.getLevel()==3)
                            slkho ++;                           
                    }
                    sltong = slkho+ slde + sltrungbinh;
                    request.setAttribute("slde", slde);
                    request.setAttribute("sltrungbinh", sltrungbinh);
                    request.setAttribute("slkho", slkho);
                    request.setAttribute("sltong", sltong);
                    request.getRequestDispatcher("Administrator/ThongKe.jsp").forward(request, response);
        } finally {            
            out.close();
        }
    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /** 
     * Handles the HTTP <code>GET</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /** 
     * Handles the HTTP <code>POST</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /** 
     * Returns a short description of the servlet.
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>
}
